Summative Test #7

A well-defined set is a group, list, or collection of easily identified objects that shared a common characteristic. Which of the following is NOT a well-defined set?

• group of Grade 7 female students

• distinct letter in the word Philippines

• color in the Philippine flag

• good senators in the Philippines

Which of the following symbol denotes a null set or empty set?

• ∈

• ∅

• ∩

• ⊂

It is a set of all elements in the universal set U, that are not elements in the given set.

• Complement of a set

• Union of a set

• Intersection of a set

• Well-defined set

It is a set operation where the resulting set is obtained by getting the common elements found in both sets.

• Intersection of Sets

• Set Difference

• Complement of a Set

• Union of Set

Which of the following sets is described using set-builder notation?

• {x|x is a prime factor of 30}

• {#,b,16,$}

• {set of vowels}

• {1,2,3,5}

6. 1.    An algebraic expression is an expression that is made up of variables and constants along with algebraic operations (addition, subtraction, multiplication, and division)

• True
• False

7. The mathematical statement in which two expressions are set equal is an integer.

• True
• False

8. The bar model is a tool that helps us visualize the given math problem using rectangles or bars.

• True
• False

9. An equation is a letter or symbol that represents an unknown number.

• True
• False

10. Expressions are made up of terms and the number of terms in each expression in an equation.

• True
• False